iOS 17.0.3 (21A360) for iPhone 12 Pro Max

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iPhone 12 Pro Max

✗ This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore.

Your download should begin shortly. If it does not, you can download it directly here:

Download (7.3 GiB)

This firmware is not signed. This means you cannot restore to it in Finder, the Apple Devices app, iTunes, or idevicerestore. The instructions below are included for reference only.

Windows

  1. Install the latest version of Apple Devices from the Microsoft Store.
  2. Plug your iPhone 12 Pro Max in to your PC.
  3. Open Apple Devices, and navigate to your iPhone 12 Pro Max.
  4. Hold the Shift key on your keyboard, and press "Restore".
  5. Select the iPhone13,4_17.0.3_21A360_Restore.ipsw file that you downloaded.
  6. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

macOS

  1. Plug your iPhone 12 Pro Max in to your Mac.
  2. Navigate to your iPhone 12 Pro Max in Finder.
  3. Hold the Option or Alt key on your keyboard, and press "Restore".
  4. Select the iPhone13,4_17.0.3_21A360_Restore.ipsw file that you downloaded.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Linux

  1. Install idevicerestore.
  2. Plug your iPhone 12 Pro Max in to your PC.
  3. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  4. To perform a full erase restore, type idevicerestore -e iPhone13,4_17.0.3_21A360_Restore.ipsw and press enter.
  5. Wait for the restore to complete, and the iPhone 12 Pro Max to reboot.

Windows

  1. Open PowerShell, and navigate to the IPSW file that you downloaded, e.g. cd Downloads
  2. Type Get-FileHash iPhone13,4_17.0.3_21A360_Restore.ipsw -Algorithm SHA1
  3. The output of the command should match the following checksum: f934f6cc25ecf60917da527b929f1a487ec8a94d. If it doesn't, you may need to redownload the file.

macOS

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone13,4_17.0.3_21A360_Restore.ipsw
  3. The output of the command should match the following checksum: f934f6cc25ecf60917da527b929f1a487ec8a94d. If it doesn't, you may need to redownload the file.

Linux

  1. Open a terminal, and navigate to the IPSW file that you downloaded, e.g. cd ~/Downloads
  2. Type openssl sha1 iPhone13,4_17.0.3_21A360_Restore.ipsw
  3. The output of the command should match the following checksum: f934f6cc25ecf60917da527b929f1a487ec8a94d. If it doesn't, you may need to redownload the file.

Checksums

SHA256sum5f4d867d2c54fc568b6bcb3562951abc589adc7866269f0e3eaabc71b809a3d7
MD5sum5f4d867d2c54fc568b6bcb3562951abc589adc7866269f0e3eaabc71b809a3d7
SHA1sumf934f6cc25ecf60917da527b929f1a487ec8a94d
Please note, the documentation below is supplied from Apple's update servers. We don't modify the contents of this documentation.

This update provides important bug fixes, security updates, and addresses an issue that may cause iPhone to run warmer than expected.

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/HT201222

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